Key-identifying device.



6.0KHNL KEY IDENTIFYING DEVICE. APPL|CATION-FILED use. 22. I915.

1,21 9,706. Patented Mar. 20, 1917.

.1 as lean r prion.

eusrav lemma, or new YORK, N. Y. Y

KEY-IDENTIFYING DEVICE.

To all whom it may concern:

Be it known that I, (irUs'rAv DZiHNE, a subject of the Emperor ofGermany, and resident of New York, in the county of New York and 'Stateof New York, have invented certain new'and useful Improvements in.l\'ey-Identifying Devices, of which the following is a specification.

This invention relates to improvements in means for identifying keys,particularly those of a flat type, such as are used in connection withcylinder locks, and the object of the invention is to provide meanswheree by each key may be distinguished from others of a similar typewhen disposed upon a ring so that there may be no difficulty inselecting the proper key to be used.

This object is attained by the novel arrangement of parts hereinafterdescribed and-shown in the accompanying drawing, forming a part of thisspecification and in which I i Figure 1 is a side elevation of a keyshowing an application of the invention.

Fig. 2 is a vertical transverse section of the same, taken on line 22 ofFig. 1.

Fig. 3 is a similar side elevation of a key, having a different form ofhead and containing a modification of the identifying means.

Fig. 4 is a transverse section of the same, taken on line Jr-4c of Fig.3.

Fig. 5 is a fragmental side view of a key, showing a furtheradaptation-of the identifying means.

7, Fig. 6 is a vertical transverse view of the same, taken on line 6-6of Fig. 5.

Figs. 7 8, 9, and 10 are side views, illustrating different markingswhich. can be applied to the identifying device and Fig. 11 is asectional view similar to that shown in Fig. 6 but showing a furthermodification.

In the drawings, the numeral 15 indicates the stem of the key to beinserted within a lock, the head 16 in some cases being of the tre-foilpattern, containing a perforation 17 by which the key is attached to aring or other support. 7

. An oblong opening is formed through the key head, in which 'isinserted a plate 18.

Specification of Letters Patent. Pattgntedi 2(1), 1917 Application filedDecember 22, 1915. Serial No. 68,160.

pattern a round opening 21 is made, provided with screw threadsreceptive of a circular disk or plate 22, in which may be formed the keyring perforation 23,v relatively close to its edge and also bearing suchdevice or inscription as may be desired t0- identify the key.

In this style the plate is screwed tightly into the head of the key,although obviously a shoulder or flange might be used to prevent thedisk from being entered too farinto the head, the same also tending toprevent the disk from becoming loose.

In Fig. 5 a similar threaded disk is inserted in the head of the key,the same being provided with a keyring opening 23 and a hole for thelocking pin 25 drilled preferably through the inserted plate and a partof the key head, the pin being tightly driven in to prevent the disk 22from loosening.

A slightly different style of holding means is shown in Fig. 11 in whicha central circular opening 31 is formed through the key head 30, theopening being afterward counterbored or otherwise operated upon toproduce an lnterior annular flange 32, the

exterior side of which is in the plane of the key head surface.

Against the 1nner surface of the flange is pressed the identifying plate33, fitted to the opening, and, if it be required, the edge surroundingthe opening may be slightly upset, positively holding the plate inplace; asin the other forms a hole 24: is formed in the plate for thekey ring.

The views shown in FigsQ-7 to 10 inclusive, are of keys having stems 15,formedwith the heads 30, having openings in which are contained thepanels 33 provided with perforations 34 for attachment to keep rings orthe like; these views illustrate some of the different markings whichmay be'employed and it will be evident from the same any particular keyin a group.

It is further noticeable that the entire expense of the device isnegligible, as the openings to receive the plates may be made at thetime of blanking the keys, while the plates themselves consist merely offlat blanks, cheaply made by well known mechanical processes.

Having thus described my invention what I claim as new and desire tosecure by Let ters Patent, is:

1. In combination with a key having a transverse opening passingentirely through the head portion thereof, of a plate suited to besecured in said opening, said plate having inscribed flat surfaces uponeach side.

2. In a device of the class described, the combination with a head ofakey having an interior opening formed therethrough, of a plateremovably engaged therein, and

means formed with the head of said key for holding said plate-rigidly inposition said plate having surfaces bearing identification the key andhaving surfaces bearing identifiration marks.

CJI

Signed at New York, in the county of New York, and State of New York,this 8th day of December A. D. 1915.

GUSTAV DAHNIE.

Witnesses:

FRANoIs J. NEKARDA, LULU A. KoI-ILMANN.

